> And who would pay for Premium non-Pro? The situation really isn't comparable because YouTube is already available for free with ads. Paying to get less ads isn't a great value add.

To get Youtube Original content like Kobra Kai (it moved to netflix in the end)

https://deadline.com/2020/06/cobra-kai-moves-netflix-youtube...

Or for non-premium user will get 5 ads before start of video whereas Premium user will get 1 ad before videos and get youtube originals, background video playback, download videos, youtube music etc. And Youtube Premium Pro users will get all other benefits of Premium users with one extra feature of going completely ad-free.